urn:ieda:metadataabout:10.7265-N51N7Z2P
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ISO 19139 Geographic Information - Metadata - Implementation Specification
2007
Firn Air Isotope and Temperature Measurements from Siple Dome and South Pole
2001-01-01
publication
doi:10.7265/N51N7Z2P
Severinghaus, Jeffrey P.
Scripps Institution of Oceanography, 9500 Gilman Dr., La Jolla, CA, 92037-0244, USA
jseveringhaus@ucsd.edu
http://orcid.org/ORCID:0000-0001-8883-3119
ORCID
author
Battle, Mark
Bowdoin College,, Brunswick, Maine,
author
Grachev, A.
Scripps Institution of Oceanography,, University of California at San Diego,
author
U.S. Antarctic Program (USAP) Data Center
publisher
Abstract: This data set includes d15N, d18O/2, dO2/N2/4, d40Ar/4, d38/Ar/2,
d84Kr/48, and d132Xe/96 values for air drawn from the top 15 to 50 m
of firn at the South Pole (summer and winter 1998) and a site at Siple
Dome (summers 1996 and 1998). Data also include related firn
temperature measurements.
The objective of this research was to better understand thermal
fractionation processes affecting records of atmospheric history from
firn and ice core gases. Recent work (e.g., Severinghaus and Brook,
1999) has exploited trapped air in ice and deep firn as a record of
past atmospheric composition and climate change. Interpretation of these paleoclimate archives is complicated by artifacts of thermal
diffusion, a process in which heavier gases migrate down temperature
gradients toward colder regions in the firn. Seasonal temperature
change at the snow surface creates strong temperature gradients in the
top few meters of the firn, which cause isotopic fractionation of firn
gases. A specific goal of this research is to identify any long-term
effects of seasonal temperature fluctuations on firn air isotopic
anomalies.
Complete
Severinghaus, Jeffrey P.
Scripps Institution of Oceanography, 9500 Gilman Dr., La Jolla, CA, 92037-0244, USA
http://orcid.org/ORCID:0000-0001-8883-3119
ORCID
pointOfContact
1
Isotope
isotopes
Temperature
parameter
Antarctic Glaciology
program
Chemistry:Ice
Glaciology
Paleoclimate
IEDA data type categories
IEDA integrated catalog keyword vocabulary
2017-10-11
creation
Antarctica
Snow/Ice
IEDA feature of interest
IEDA integrated catalog keyword vocabulary
2017-10-11
creation
Atmosphere
Cryosphere
Geochemistry
IEDA topic
IEDA integrated catalog keyword vocabulary
2017-10-11
creation
Siple Dome
South Pole
place
US Antarctic Program Data Center (USAP-DC)
Data Center
Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0]
Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0]
Severinghaus, J.P., A. Grachev, and M. Battle. 2001. Thermal fractionation of air in polar firn by seasonal temperature gradients. Geochemistry, Geophysics, Geosystems [online journal] 2: Paper no. 2000GC000146. Severinghaus, J.P. and E.J. Brook, 1999. Abrupt climate change at the end of the last glacial period inferred from trapped air in polar ice. Science 286: 930-934.
URN
IsReferencedBy
eng
climatologyMeteorologyAtmosphere
Siple Dome; South Pole
-89.997 -102
-81.667 -148.767
1998-01-14
1998-07-28
http://dx.doi.org/10.7265/N51N7Z2P
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This metadata record was generated by an xslt transformation from a DataCite metadata record; The transform was created by Damian Ulbricht and Stephen M. Richard. 2017-11-15 these records include new IEDA keywords for geoportal facets Run on 2018-06-21T19:05:26-07:00
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